Triphora burnupi E.A. Smith, 1910

Albano, Paolo G., Bakker, Piet A. J. & Sabelli, Bruno, 2019, Annotated catalogue of the types of Triphoridae (Mollusca, Gastropoda) in the Natural History Museum of the United Kingdom, London, Zoosystematics and Evolution 95 (1), pp. 161-308 : 161

Triphora burnupi E.A. Smith, 1910

Figure 82

Triphora burnupi Smith 1910: 196, pl. 7, fig. 8.

Type locality.

Durban, Natal, South Africa.

Type material.

Syntypes: NHMUK 1911.8.30.10: 1 specimen, Durban, South Africa .

Original description.

Testa parva, angusta, subulata, albida circa medium anfractuum linea saturate fusca cincta, et inter gemmules supra liras spirales dilute fusco notata; anfractus 17, superiores quatuor fusci, longitudinaliter tenuiter lirati, tertius et quartus circa medium liris spiralibus duo cincti, quintus ad octavus seriebus gemmarum duabus (serie infima majori) instructi, caeteri liris quatuor inaequalibus ornati, lira infra lineam fuscam distincte gemmata; anfr. ultimus ad peripheriam gemmato-carinatus, infra concavus, lira unica instructus; apertura rotunde piriformis; canalis obliquus, recurvus, praeter extremitatem clausus.

Longit. 7, diam. 1.5 mm.

Hab. -Durban (H. Burnup).

Of the four lirae upon the later whorls, that below the brown line is the most conspicuous and most distinctly gemmate. The lira or thread above the brown line is the most slender and faintly gemmate, and the lira above that is the least gemmate of all, and exhibits here and there only very faint traces of the light brown dotting which occurs between the gemmules on the other lirae.

Translation of the Latin text.

Small, narrow, subulate shell, white with a dark brown line in the middle of the whorls, and marked with light brown between the gemmules on the spiral rows; 17 whorls, upper four brown, slightly lyrate longitudinally, the third and the fourth with two median spiral rows, from the fifth to the eighth two series of gemmules (the lower the greater), other decorated by four unequal lirae, lira under the brown line clearly gemmate; last whorl gemmate-carinated at the periphery, concave at its underside, with only one lira; round pyriform aperture; anterior siphon slanting, curved, closed at its end.

Height 7 mm, diameter 1.5 mm.

Diagnosis.

Syntype height 6.5 mm. Shell conical with flat sides. Teleoconch of 12 whorls bearing three main narrow and faintly tubercled spiral cords; a fourth is visible suprasuturally. The first four whorls bear better defined tubercles. Peristome with a quite deep slit-like posterior sinus and additional spiral cords appearing close to the lip. Base angular with a thick smooth spiral cord at the periphery. Siphonal canal long. Protoconch multispiral of probably four whorls but the apical part is worn in the syntype. The last three whorls bear axial riblets; a spiral keel is present on the third last whorl and two on the other whorls. Background colour pinkish-white with a brown mid-whorl band; protoconch brown.

Figures

Figure 82. Trifora burnupi E. A. Smith, 1910, Durban, South Africa. A-E, G, H, K, L Syntype NHMUK 1911.8.30.10: front (A, B), side (C, D), back (E), protoconch (G, H), aperture (K), peristome (L). F Original figure. I, J Original labels. Scale bars: A-E: 1 mm; G, H: 0.2 mm; K, L: 0.5 mm.